GeForce GTX 460 SE vs Radeon HD 4750

Intro

Compare all that to the Radeon HD 4750, which comes with a clock frequency of 730 MHz and a GDDR5 memory speed of 800 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750		75 Watts
GeForce GTX 460 SE		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

Theoretically, the GeForce GTX 460 SE should perform quite a bit faster than the Radeon HD 4750 overall. (explain)

GeForce GTX 460 SE		108800 MB/sec
Radeon HD 4750		51200 MB/sec
	Difference: 57600 (113%)

Texel Rate

The GeForce GTX 460 SE is quite a bit (more or less 34%) better at texture filtering than the Radeon HD 4750. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
Radeon HD 4750		23360 Mtexels/sec
	Difference: 7840 (34%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 460 SE is the winner, and very much so. (explain)

GeForce GTX 460 SE		20800 Mpixels/sec
Radeon HD 4750		11680 Mpixels/sec
	Difference: 9120 (78%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.